爲什麼異步測試在編譯的Python 3.6中失敗？

Question

我編寫的Python 3.6和運行測試，但其中2失敗：

====================================================================== 
FAIL: test_handle_expt (test.test_asyncore.TestAPI_UseIPv4Poll) 
---------------------------------------------------------------------- 
Traceback (most recent call last): 
    File "/Users/andrei/Python/cpython/Lib/test/test_asyncore.py", line 676, in test_handle_expt 
    self.loop_waiting_for_flag(client) 
    File "/Users/andrei/Python/cpython/Lib/test/test_asyncore.py", line 516, in loop_waiting_for_flag 
    self.fail("flag not set") 
AssertionError: flag not set 

====================================================================== 
FAIL: test_handle_expt (test.test_asyncore.TestAPI_UseIPv6Poll) 
---------------------------------------------------------------------- 
Traceback (most recent call last): 
    File "/Users/andrei/Python/cpython/Lib/test/test_asyncore.py", line 676, in test_handle_expt 
    self.loop_waiting_for_flag(client) 
    File "/Users/andrei/Python/cpython/Lib/test/test_asyncore.py", line 516, in loop_waiting_for_flag 
    self.fail("flag not set") 
AssertionError: flag not set 

---------------------------------------------------------------------- 
Ran 101 tests in 21.140s 

FAILED (failures=2, skipped=6) 
test test_asyncore failed 

可以去錯了怎麼辦？

Answer 1

這已經帶來了兩次的bug跟蹤系統：

• Issue 28456 -- Test failures under macOS 10.12 Sierra
• Issue 28087 -- macOS 12 poll syscall returns prematurely

第一個被關閉的第二愚弄的人，第二個尚未被固定。總之，the poll() system function顯然是broken in Sierra。你需要等待他們完成修復。在此之前，忽視這些失敗是安全的。